Perhaps, the misalignment is great enough that shifting will obviously be off, that the derailleur consistently misbehaves. That situation is one in which getting the derailleur caught in the spokes is a vulnerability too, but there are usually warning signs in the form of dismal shifting. More frequently, the shifting is just a little bit off, or varies depending on how hard the rider is pedaling. Certainly there are no tool roll-sized derailleur aligners to fix the problem in the field.
Without knowing the hanger is bent, the shifting issues could be plausibly due to any of a dozen other maladies. Over the years as indexed shifting systems have moved from 6sp to the current 11sp, the cog-to-cog spacing is almost half of what it once was. That means that less angle of misalignment is required before a bent hanger creates some sort of shifting problem.
Every time Shimano and Campagnolo add another cog to the cluster, the situation gets worse. So why are replaceable hangers so easily bent? They are typically made from relatively low strength aluminium that is more suited to high volume manufacturing most likely casting or perhaps hot-forging. One would think that stiffer, stronger derailleur hangers would be a good thing. In fact, top-level professional teams often get custom hangers made from stronger series aluminium, stainless steel, or even titanium.
Several manufacturers also supply their sponsored teams with framesets with non-replaceable hangers; the philosophy being that consistent shifting and improved single-crash toughness is more important than long-term frame survivability. For the rest of us, we will just have to be especially careful of the right rear quarter of our bikes.
It would be a nightmare if you could only get hangers from the bike companies. Other than Trek and a few other huge bike brands, most bike companies are in the business of selling complete bikes, so aftermarket parts are afterthoughts. So other companies, particularly Wheels Manufacturing, have stepped into the role of supplying replacement hangers to shops and parts distributors, but the sheer number of variations is reaching ridiculous levels.
Wheels Manufacturing alone lists about individual sku numbers. This makes ordering the correct replacement hanger difficult, especially in a situation when the consumer brings an incomplete, broken hanger and the model year of the bike is unknown. Like that, it is virtually impossible to order the correct hanger without internet access and a pool of knowledge deep enough to be able to infer the model year of a frame from that of its components. I have re-shaped 2 hangers to fit my bike with a bit of filing, both times because a website advised the wrong one for my model and year.
Hangers all cost pretty much the same price and derailleurs fit into all of them so I doubt the people saying there are so many different ones to fleece a few more dollars are correct.
Talk of patents doesn't explain why bike models require different hangers depending on the year and I've seen the case where my budget bike takes the same hanger as a top of the range bike of the same year but NO other bike by that manufacturer uses the same hanger until 3 years later, my take is that no-one really knows why there are so many damn hangers! Sign up to join this community.
The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Why are there so many types of mech hanger? Ask Question. Asked 6 years, 1 month ago. Active 3 years, 7 months ago. Viewed times. Improve this question. Phil Phil 1 1 silver badge 7 7 bronze badges. Mostly because they can. I do wonder why they are not using the same dropout for different but similar frames, it should make design easier, especially with disc brakes and everything.
Certainly there are generic hangers that will fit a wide variety of bikes. But that is all I can think of. They are overpriced for what they are but normally if you don't crash or drop your bike on that side you should not have to replace, some brands do have hangers that are way softer than others and you just have to blow on them and they bend, if yours is like that you can replace it with a aftermarket option like wheels manufacturing which seem to be a bit stiffer and would solve you problem.
Because "fuck you" that's why. More seriously, the cost of stocking the item as an overhead is probably higher than the cost of the actual thing. The manufactured cost should be 3x the cost of the material. Retail should be about seven times that.
Still seems too high to me though. Edit: My math is fucked. Yep waaaaay too high. It is high Which is a snotload more metal and machining. The post manufacturing costs have been coming down as more and more companies are shipping direct. This is due to manufacturing flexibility. To change from machining one part to another is no longer a tooling change but a software change, which costs almost nothing. My math is fucked.
Wow, gotta agree with you, that's an unreasonable price for what is a very uncomplicated piece of steel. The hanger that broke was made out of some type of rock material, cant think of the material. Not metal, thats for sure! I guess? You're just fabulously, hilariously wrong, and you were trying to correct someone.
Correcting someone from a place of ignorance is pretty rude tbh. It's not steel. It's a complicated piece of alloy designed to specifically bend before the frame and hang the derailleur at a very specific place. You make it sound like hangers are specially researched and designed to bend that way or something, they're literally solid chunks of machined alloy.
Check on eBay you can get them cheap on there. Same thing but brown carded instead of giant branded. He means it costs 10 to manufacture so giant sells it for The bike shop sells it for Giant makes 5 shop makes Usually accurate except items like that are priced for low demand so giant probably makes Some RD's will cost.
The year they add a new cog, for instance. No one understood that. It's clear in the comment the bike shop makes a 50 point margin which is pretty standard for retail across the board; some industries make more, some make less.
Bike shops only exist now as methods to buy bikes and have work done. It is pretty equivalent with car dealerships actually. Golf and cycling are both hobbies dominated by people who can afford the time it takes. I am in a position that allows me to spend an hour and a half, five days a week, doing nothing "productive" 1.
Those with that amount of luxury time, tend to have deeper pockets. Because that's what it is! Cycling is the new golf. It's not the new anything. It's been a hobby of the middle class and up since the 90s in America. Try finding it on wheelsmfg.
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